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Merycochoerus Temporal range: Early Oligocene
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Merycochoerus superbus skull | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Artiodactyla |
Family: | †Merycoidodontidae |
Genus: | †Merycochoerus Leidy 1858 |
Type species | |
†Merychochoerus proprius | |
Species | |
see text | |
Synonyms | |
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Merycochoerus (Greek: "ruminant" (merux)-like "swine" (khoiros)[1]) is an extinct genus of oreodont of the family Merycoidodontidae, endemic to North America. They lived during the Early Oligocene 33.9—30.8 mya, existing for approximately 3 million years.[2] Fossils are widespread through the western United States.
Merycochoerus was a cud-chewing plant-eater with a long face, tusk-like canine teeth, heavy body, long tail, short feet, and four-toed hooves.[citation needed] The 1 metre (3.3 ft) long animals are thought to have been amphibious, as members of the genus possessed an elongated, barrel-shaped body and short limbs that are typical adaptations found in semi-aquatic mammals.[3]